Wiring
Printed Circuit Board (PCB) with modules, connection sockets and terminal blocks
Potentiometers connected to the PCB
Arduino = blue
Switches and buttons connected to the PCB
Arduino = blue
Displays, RTC, FRAM connected to the PCB
Arduino = blue
DFPlayer, relay, speaker connected to the PCB
Arduino = blue, Terminal blocks = green, Speaker = yellow, DFPlayer = purple
